服务器控件button点击时执行脚本弹出提示对话框Button2.Attributes.Add("onclick","事件")

<HTML>
<HEAD>
  <title>**********资料更新</title>
  <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
  <meta content="C#" name="CODE_LANGUAGE">
  <meta content="JavaScript" name="vs_defaultClientScript">
  <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
  <LINK href="../free.css" _fcksavedurl=""../free.css"" _fcksavedurl=""../free.css"" _fcksavedurl=""../free.css"" type="text/css" rel="stylesheet">
  <script language=javascript type=text/javascript>
  function check()
  {
  if(window.confirm("dfdfdfd"))
  return true;
  else
  return false;
  }
  </script>
</HEAD>
<body onmousemove="HideMenu()" bgColor="#ffccff" topMargin="0" MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:button id="Button2" runat="server" Text="删除全部"></asp:button>
</form>
后台：
private void Page_Load(object sender, System.EventArgs e)
  {
    this.Button2.Attributes.Add("onclick","return check()");
  }
private void Button2_Click(object sender, System.EventArgs e)
  {
    Response.Write("以下是删除语句222");
  } --------------------- 本文来自风雨无阻1203 的CSDN 博客，全文地址请点击：https://blog.csdn.net/zyf1203/article/details/1606632?utm_source=copy